You’d think that an Olympic athlete who can lift nearly 800 pounds goes home from the gym every night and gobbles up some high-protein meat. Not Kendrick Farris. This three-time Olympian has been a vegan since the birth of his second son in 2014 — and since eliminating animal products from his diet, he’s actually become stronger.  Farris, 30, told Sports Illustrated that the dietary switch was motivated by a desire to return to “the purest form of our life, our…